Wall Street: The dark theory

No shortage of villains stands accused of igniting the brushfire raging across Wall Street: greedy lenders, gullible home buyers, negligent regulators, numbskull credit ratings agencies, and vicious short-sellers, for starters. Maybe they share the blame. But what if the underlying problem goes deeper? What if the reality is that the US economy has been a lot worse than was thought for a long time, and now the chickens are finally coming home to roost?